Installation guide

Deployment Primer
2-35
Note: The HA deployment mode is only supported in Transparent Bridge mode. High
Availability among multiple IWSVAs deployed in the other supported deployment
modes is handled externally to the IWSVA instance. Specifically, load balancers
support redundancy in any of the proxy modes. The Cisco WCCP device can manage
traffic to redundant IWSVAs in WCCP mode. The ICAP proxy client can manage
traffic to redundant IWSVAs in ICAP mode.
F
IGURE 2-17. High Availability Deployment Mode
HA Deployment Mode Installation Guidelines
When IWSVA is initially installed, a static IP address is assigned to the selected network
interface on each of the IWSVA units participating in the HA cluster.
To successfully configure the HA feature, you will need to know which network card
(eth0, eth1, and so on) was assigned the IP address during the installation process and
how the network interfaces are configured on the server. IWSVA provides a CLI
command to simplify the gathering of this information and by executing this CLI
command after the initial installation of IWSVA, you can gather and record the
necessary information to complete the installation with the Web console.
After the CLI command is used to gather the necessary information, you can connect to
the Web console through your browser. For new installations, the Deployment Wizard
will automatically start and guide you through the deployment modes.
To avoid creating a network loop, be sure to configure each of the IWSVA units as a
Forward Proxy device first. Once all of the network information is configured, the
deployment wizard can be used to create the HA cluster.